366867021 has 16 divisors (see below), whose sum is σ = 518453568. Its totient is φ = 229958400.

The previous prime is 366866999. The next prime is 366867031. The reversal of 366867021 is 120768663.

It is not a de Polignac number, because 366867021 - 2²¹ = 364769869 is a prime.

It is a super-2 number, since 2×366867021² = 269182822194828882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366867031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57186 + ... + 63276.

It is an arithmetic number, because the mean of its divisors is an integer number (32403348).

Almost surely, 2^366867021 is an apocalyptic number.

It is an amenable number.

366867021 is a deficient number, since it is larger than the sum of its proper divisors (151586547).

366867021 is a wasteful number, since it uses less digits than its factorization.

366867021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7292.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 366867021 is about 19153.7730225666. The cubic root of 366867021 is about 715.8733982592.

The spelling of 366867021 in words is "three hundred sixty-six million, eight hundred sixty-seven thousand, twenty-one".